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Fig. 2

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Properties of our detailed thin-disk chemical evolution model: top row, left: SFR in the solar neighborhood resulting from our model. Top row, right: the total (solid), stellar (dashed), and gas (dotted) density time evolution in the solar neighborhood. The error bars are observational constraints (see Table B.1 for references to the data). Middle row, left: SFR as a function of time for different galactic radii as color-coded. Middle row, right: total gas density (remaining after star formation + recycled) as a function of time for different galactic radii as color-coded on the left. Bottom row, left: [Fe/H] gradients. Different curves and colors correspond to different look-back times as indicated. Bottom row, right: [O/Fe] gradients for different look-back times as on the left.

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